I get your point and I get everyone's else, but there's no real world benefit to me using a second SSD as a scratch disk since you already have a SSD as a boot drive. If you already have a good amount and fast enough memory, try setting up a RAMDISK and see the real world difference.

I think you are missing the point that this is more than just the scratch disk. The scratch disk is only one small part of the equation and, for most, is nothing in size compared to the rest. If it was just that, then I wouldn't see a need for a second SSD. A RAMDisk could be an option if you keep the scratch disk small enough for those with 16-32GB of RAM. But if you are planning on working with a 20-25GB scratch disk like I do, then it becomes cost prohibitive where cost far outweighs the benefit gain you would get over an SSD.

Try putting the catalog and previews files, again they have to be in the same location, on a RAMdisk and it will be nearly impossible in situations like mine where I would need 100+ GB of dedicated RAM to house it.